KNSU2.5-56 is a plastic spur gear with a steel core, module 2.5, 56 teeth, pitch diameter of 140 mm, outside diameter of 145 mm, face width of 25 mm, hub width of 15 mm, total length of 105 mm, and an allowable torque of 42.1 N·m (4.29 kgf·m). The bore diameter is 65 mm, with a JIS grade N9 precision rating and 20° pressure angle. The gear is made of MC602ST nylon fused to an S45C steel core using a knurled surface bonding process for high holding strength and dimensional stability. Backlash is specified as 0~0.48 mm. The part is designed for use in high-temperature environments up to 140°C and is not recommended for plastic-to-plastic gear pairing without lubrication.
Module 2.5, 56 Tooth Nylon Steel Core Spur Gear with Finished 18mm Bore
Our plastic spur gears are available in a variety of materials, including:
With a variety of fastening styles, including:
You May Also Need:
Shafts
Bearings
Couplings
For custom components or modifications to a standard part, call us or submit an RFQ.
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Design of Plastic Gears and General Considerations of Plastic Gearing
How to Achieve Optimum Performance in a Miniature Gear Train
| QTC METRIC GEARS | Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|---|
| Product Category | Gears | Gears |
| Product Number | KNSU2.5-56J18 | KNSU2.5-56J18 |
| Product Name | Plastic Spur Gears (metric) | Module 2.5, 56 Tooth Nylon Steel Core Spur Gear with Finished 18mm Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 56 | 56 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Nylon | Nylon; Nylon / Steel Core |
